Cable-relay apparatus.



I. KITSEE. CABLE RELAY APPARATUS. APPLIOATION FILED'DEQQ, 1908. RENEWEDAPR. 22, 1911.

1,01 1,210, Patented Bea 12,1911

Q wmms sss :INVEINTOR.

am BY MQKZ/ a ATTORNEY orinon .ISIDGR KIISEE, OF PHILAIDEILFHIA,PENNSYLVANIA.

CABLE-RELAY srrsns'rusj Specification of Letters Patent.

Patented Dec. 12, 1911.

1 Application filed December 4-, 1908 Serial No. 468,814. Renewed April22, 1911. Serial No. 622,745.

To all whomi'it may concern.-

Be it known that I, IsinoR Krrssn, a citizen of the United States,residing in the cityof Philadelphia, county ofPhiladelphia, and State ofPennsylvania, have invented anew and useful Cable-Relay Apparatus, ofwhich the following is a specification.

My invention relates to telegraphy, and

- particularly to tclegraphy over cables or long lines or circuits inwhich the disturbeffects to capacity are great.

in Tn the'ordinary practice of cable telegraphy dots are represented intransmission by, for example, positive impulses of current, while'thedashes are represented by negative impulses, both the positive andnegative iin aulses being of relatively short and substantially equalduration. And in such practice the siphon recorder or other receivinginstrument responds in one direction to the positive impulses and inanother direction to the negative impulses, such deflections be ing thentranslated into signals or messages.

It is the object of my invention in such a common system of 'telegraphy,tov provide means at the receiving station whereby the received dots anddashes may be read from an ordinary telegraph sounder or may be recordedas ordinary dots and dashes on a Morse inlrer or recorder. To this end Iemploy a sounder or recorder having two windings each in a differentcircuit, one winding being for the purpose of reproducing or recordingdots, while the other is for the purpose of reproducing or recordingdashes. And in conjunction with these separated sounder or recorderwindings, I employ relays controlled by the rccei ring positive andnegative cable impulses, in a man.- ner hereinafter described.

For an illustration of one of the forms my invention may take, referenceis to be had to the accompanying drawing, which is a diagrammatic viewof receiving appagzntus.

The apparatus here shown may be at a station intermediate the ends of acable or line or maybe a terminal receiving station.

-The cable or line is represented by L in 1 by the thread or wire 5 putin tension by the thread or wire 1... The plate or member a carries thecontact 01 adapted to coiiperate with the adjustable stationary contact(-2. Threads or fibers f and g connect'from the coil Glwith diagonallyopposed corners of so the plate or member a, (so that rotation of thecoil C within its field in response to received current will move thecontact d. In normal condition the contact d is in engagement withcontact 6. And similar parts are 5 member a, the wire or fiber a,through its screw head 0.

Having one pole connected to the contact 6 is a gravity or bluestone orother batteryh having its other pole connected to c','and therefore to(Z.

(Z and e are normally in engagement with each other. In shunt with thebattery it is connected the winding 2 of the relay or electromagnet Itwhose tongue or armature so is normally held in engagement with contactis by the spring Z. The magnet It may be a long pull magnet. -A frontstop at is also provided. hen the armature or tongue is in engagementwith contact is the battery n is short circuited through re-- sistance0, such resistance being suitably suliicient to prevent the rapiddeterioration of the battery 11, when contacts j and 7c are inengagement with each other. the battery at and resistance 0 is connectedone winding p of the sounder or recorder D, whose armature lever g isnormally retracted by the spring r.

Short circuited the contacts d and e, 9

at the left, is a gravity or bluestone or other battery 8 in shunt withwhich is the wind ing .t of a second relay or elcctromagnet R whosetongue or armature u is normally retracted by spring 1* againstinsulated step w. When the tongue it engages the contact a: the circuitof the second winding g of the sounder or recorder D i s closed throughthe battery positive and negative impulses traverse the windings of thecoils C and U causing each to deflect, or tend to deflect, in themagnetic field as well understood in the art of siphon, recorders. tiveimpulse, representing, for exam;

, dot, causes a movement in such direction In the case of the cbil C apost 1 Therefore, the battery 7t 75 .is normally short circuited sincethe contacts In shunt to co The operation is as follows: The received3.05

as to momentarily separate the contact d from the contact 6, thesecontacts being normally in engagement with each other, and thismomeliary separation of d and 6' causes the electromagnet or relay R tobe inoniei'itarily energized, thus causing the armature or tongue u tomomentarily engage the contact an and then return to the back stop c0.This means the momentary energization. of the sounder or recorder magnetwhose winding is y causes the sounder or recorder to reproduce a shortclick or dot. Any negative impulse traversing the coil C hasrno eil'ectupon the contacts (5 and e except to bring them slightly more firmlyinto engagement with each other. A positive impulse traversing the coilC has no eilect upon the contacts (I and'e except to bring them morefirmly into engagement with each other. Upon the passage of a negativeimpulse, however,

representing a dash, the coil C deflects slightly and momentarilyseparates contact (Z from contact a. As a result of tliis momentaryseparation the relay or electroiuagnet R is momentarily energizedresulting in the attraction of the armature or tongue j away from thecontact against the stop m, the armature immediately returning, however,into engagement with contact la. The t me of travel of armature y' fromis to m and return is considerable however, the stop mand contact I:being relatively widely separated. During this outward and return travelof the armature j the sounder or recorder magnet whose winding is y) isenergized causing the armature (1 to be held attracted a length of timecorresponding with the time consumed in the travel of y from is to m andreturn, thus producing a dash either by sound or record. By myarrangement, therefore, though the cable impulses are of oppositepolarities and of relatively short duration, I am enabled to reproducedots and dashes either by sound or record just as in the case of anordinary Morse telegraph line.

And irrespective of whether the coils C and vC are in the same ordifferent instruments,

they may be connected'in parallel with each other instead of in seriesas shown, it being only necessary that one coil shall separate itscontrolled contacts in response to an impulse of one polarity while theother impulse shall separate its controlled contacts in response to animpulse of'another polarity. And while I have shown the contactsnormally in engagement with each other to be separated in response to animpulse, it is to be understood that they may be so arranged that inresponse to an impulse they are momentarily closed.

What I claim is:

1..,;,lhe combination with a line or'cable carryin g impulses ofdillerent polarities and of substantially equal duration, of twowindings associated with said line or cable, means responsive to a lineor cable impulse of one polarity for momentarily energizing one of saidwindings to'produce a dot, and means responsive to a line or cableimpulse of the other polarity for energizing the second winding arelatively greater period to produce a dash.

2. The combination with a line or cable carrying short impulses ofdifferent polari ties, of a relay associated with said line or cable, alocal circuit controlled by said relay, and a signal translatinginstrument in-' cluded in said local circuit, said local circuit havingits condition altered by said relay for a greater period'of time thanthe momentary energization of said relay, whereby a dash is produced bysaid signal translating instrument in response to a line or cableimpulse.

, 3. The combination with a line or cable carrying impulses of differentpolarities and of substantially e ual duration, of a relay associatedwith said line or cable, a local circuit controlled by said rela naltranslating instrument incliided in said local circuit, said signaltranslating instrument being energized for a greater period than theperiod of operation of said relay, whereby said signal translatinginstrument produces a dash in response to a line or cable impulse. l

4. The combination with a line or cable carrying impulses of diflerentpolarities and of substantially equal duration, two relays associatedwith said line or cable, a winding controlled by each relay, one ofsaidwindings momentarily energized in response to a line or cableimpulse to produce a dot, the other winding energized a relativelygreater period in response to a line or cable impulse for producing adash.

5. The combination with a line or cable carrying short impulses ofdifferent polarities, of contacts momentarily separated in response toan impulse of one polarity, a relay momentarily energized in response tosuch separation, and a winding of a signal reproducinginstrumentmomentarily energized .by said relay, contacts momentarilyseparated in response to an impulse of the other polarity, a secondrelay momentarily energized in response to such separation, and 'asecond winding of a signal reproducand a siging instrument energized bysaid relay for a relatively greater period for producing a dash.

6. The combination with a line or cable carrying short impulses ofdifferent polarities, means for momentarily energizing a a secondwinding of a signal reproducing instrument normally short circuited jbythe relay contacts, the timefof separation of the relay contacts beingrelatively great.- I

7. In combination wlth a line or cable carrying short impulsesofdifierent p'olarities, of a relay momentarily energized in response toan impulse of one polarity, a winding of a signal reproducinginstrument:

momentarily energized by saidre-lay, means 'res onsive to an impulse ofthe other p0 ,larlty for momentarily energizing a second relay, thecontacts of said second relay normally short circuiting a second windingof a signal reproducing instrument, the time of separation of thecontacts of said second relay being relatively great.

8. The combination with a line or cable carrying short im ulses, of arelay momentarily energize in response to an impulse, an instrumentwinding normally short "circuited by the relay contacts, the

travel of the movableirelay contact being relatively great, whereby saidinstrument winding is energized during the forward and return movementof the'movable'contact of said relay. p

9. The combination with a line or cable carrying short impulses ofdifferent polarities, of a coil traversed by the line current,

contacts normally in engagement'with each'. other and momentarilyseparated by said 'energization of said relay.

during the forward and return movement of the movable contact of's'aidrelay.

, :10. The combination with' a line or. cable carrying short impulses ofdiiierent polarities, of a signal'reproducing instrument hav' ing twowindings, means for energizing one of said windings momentarily inresponse to an impulse of one polarity, and means responsive to animpulse of the other po larity for energizing the second winding arelatively greater period.

11. Means for translating relatively short positive and negative'line orcable impulses into dots and dashes comprising a signal reproducinginstrument having two windings, means responsive-to an impulse of onepolarity for momentarily energizing one windingto produce a dot, andmeans responsive to an impulse of the other polarity for energizing thesecond winding a relatively greater period to produce a dash.

12. The combination with a line or cable carrying short impulses ofdifferent polarities, of a signal reproducing instrument having twowlndings, the circuit of one wind ing being normally open, and means formomentarily closing said circuitin response to an impulse of onepolarity, a relay mo- I .mentarilyenergized in. response to an impulseof the other polarity, a second wind ing of a signal reproducinginstrument and a source of energy being normally short circuited by therelay contacts, the separation of the relay cont-acts being for arelatively great period in responseto the momentary In testimony whereofI have hereunto afiixed my signature in the'presenceof the twosubscribing witnesses.-

ISIDOR KITSEE.

Witnesses A. E. STEINBOOK, ELEANOR T. MCCALL.

